pci.h File Reference

The Header files for actual PCI source. More...

#include <basics.h>
#include <hal.h>
#include <graphics.h>
#include <drivers/rtl8139.h>
#include <debugger.h>
#include <ahci.h>
#include <nvme.h>
#include <isr.h>
#include <pci_id.h>

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Go to the source code of this file.

Classes
struct	pci_location_t

Macros
#define	PCI_CONFIG_ADDRESS   0xCF8
#define	PCI_CONFIG_DATA   0xCFC

Typedefs
typedef void(*	pci_probe_fn) (uint8_t bus, uint8_t slot, uint8_t function)

Functions
uint16	pci_read_word (uint16 bus, uint16 slot, uint16 func, uint16 offset)
	Read a 16-bit value from a PCI configuration register.
uint16	getVendorID (uint16 bus, uint16 device, uint16 function)
	Gets the Vendor ID from PCI.
uint16	getDeviceID (uint16 bus, uint16 device, uint16 function)
	Gets the Device ID from PCI.
uint16	getClassId (uint16 bus, uint16 device, uint16 function)
	Gets the Class ID from PCI.
uint16	getSubClassId (uint16 bus, uint16 device, uint16 function)
	Gets the Sub-class ID from PCI.
uint8	getRevision (uint16 bus, uint16 slot, uint16 func)
uint8	getProgIF (uint16 bus, uint16 device, uint16 function)
void	probe_pci (void)
	Scans (Probes) PCI Devices.
void	print_lspci (void)
uint32	pci_config_read_dword (uint8 bus, uint8 slot, uint8 func, uint8 offset)
	Function to read a 32-bit value from the PCI configuration space.
void	pci_config_write_dword (uint8 bus, uint8 slot, uint8 func, uint8 offset, uint32_t value)
uint32	get_ahci_bar_address (uint8 bus, int slot, int func, int bar_num)
	Gets the AHCI bar address.
int	proc_pci_register ()
	Registers the PCI devices into the procfs.

Variables
cstring	display_adapter_name
cstring	GPUName [2]
cstring	using_graphics_card
uint64 *	graphics_base_Address
int	total_devices

Detailed Description

The Header files for actual PCI source.

Author

Pradosh (prado.nosp@m.shga.nosp@m.me@gm.nosp@m.ail..nosp@m.com)

Version

0.1

Date

2023-10-29

Copyright

Copyright (c) Pradosh 2023

Definition in file pci.h.

Macro Definition Documentation

PCI_CONFIG_ADDRESS

#define PCI_CONFIG_ADDRESS   0xCF8

Definition at line 33 of file pci.h.

PCI_CONFIG_DATA

#define PCI_CONFIG_DATA   0xCFC

Definition at line 34 of file pci.h.

Typedef Documentation

pci_probe_fn

typedef void(* pci_probe_fn) (uint8_t bus, uint8_t slot, uint8_t function)

Definition at line 36 of file pci.h.

Function Documentation

get_ahci_bar_address()

uint32 get_ahci_bar_address	(	uint8	bus,
		int	slot,
		int	func,
		int	bar_num )

Gets the AHCI bar address.

Parameters

bus	The PCI bus number.
slot	The PCI slot number.
func	The PCI function number.
bar_num	The Base Address Register Number.

Returns

uint32

getClassId()

uint16 getClassId	(	uint16	bus,
		uint16	device,
		uint16	function )

Gets the Class ID from PCI.

Parameters

bus
device
function

Returns

uint16 Class ID

getDeviceID()

uint16 getDeviceID	(	uint16	bus,
		uint16	device,
		uint16	function )

Gets the Device ID from PCI.

Parameters

bus
device
function

Returns

uint16 Device ID

getSubClassId()

uint16 getSubClassId	(	uint16	bus,
		uint16	device,
		uint16	function )

Gets the Sub-class ID from PCI.

Parameters

bus
device
function

Returns

uint16 Sub-class ID

getVendorID()

uint16 getVendorID	(	uint16	bus,
		uint16	device,
		uint16	function )

Gets the Vendor ID from PCI.

Parameters

bus
device
function

Returns

uint16 Vendor ID

pci_config_read_dword()

uint32 pci_config_read_dword	(	uint8	bus,
		uint8	slot,
		uint8	func,
		uint8	offset )

Function to read a 32-bit value from the PCI configuration space.

Parameters

bus
slot
func
offset

Returns

uint32

pci_read_word()

uint16 pci_read_word	(	uint16	bus,
		uint16	slot,
		uint16	func,
		uint16	offset )

Read a 16-bit value from a PCI configuration register.

This function reads a 16-bit value from a specified PCI configuration register using the provided bus, slot, function, and offset parameters.

Parameters

bus	The PCI bus number.
slot	The PCI slot number.
func	The PCI function number.
offset	The offset within the PCI configuration register to read.

Returns

The 16-bit value read from the specified PCI configuration register.

proc_pci_register()

int proc_pci_register

(

)

Registers the PCI devices into the procfs.

Returns

int 0 always